Track data hubs are collections of external tracks that can be imported into the UCSC Genome Browser. Hub tracks show up under the hub's own blue label bar on the main browser page, as well as on the configure page. For more information, including where to host your track hub, see the User's Guide.To import a public hub click its "Connect" button below.

NOTE: Because Track Hubs are created and maintained by external sources, UCSC is not responsible for their content.

Check the configuration settings for a hub, including the settings in the hub.txt, genomes.txt, and trackDb.txt files. If there are errors in the hub setup, a heirarchal tree of tracks is presented with the errors in red text. A hub with no errors still has the tree present but needs to be clicked to be expanded to explore the track heirarchy.

Also present are buttons to load the hub with track timing measuring turned on in order to profile slow loading tracks, and an option to disable the track caching mechanism so the Genome Browser picks up changes to the configuration files or track data files. For more information on making track hubs, please see the following links: